Improvement in tenoning-machines



s. REDPIELDJ. Tenoning-Machine.

Patented Dec. 4, 1877.

WITNESSES ATTORNEYS.

N-PETERS. FHOTO-LITHDG'RAFHER. WASHINGTON, D. C,

UNITED STATES PATENT OFFICE.

STEPHEN M. BEDFIELD, OF MABYVILLE, MISSOURI.

IMPROVEMENT IN TENONING-MACHINES.

Specification forming part of Letters Patent No. 197,797, dated December4, 1877; application filed October 6, 1877.

To all whom it may concern:

Be it known that I, STEPHEN M. REDFIELD,

of Maryville, in the county of Nodaway and State of Missouri, haveinvented a new and Improved Machine for Cutting Tenons, of which thefollowing is a'specitication:

In the accompanying drawings, Figure 1 represents a plan v1ew Fig. 2, avertical longitudinal section on line as as, Fig. 1; and Fig. 3, avertical transverse section on line y y, Fig. 1, of my improved machinefor cutting tenons.

Similar letters of reference indicate corresponding parts.

This invention relates to an improved machine for cutting tenons onboards in a quick and effective manner by means of hand or foot power,the machine being readily adjusted to the size of the tenon required;and the invent-ion consists in the construction and combination ofparts, which will be hereinafter more fully described, and then pointedout in the claim.

Referring to the drawing. A represents the supporting-frame that guidesin ways the reciprocating frame B of the planes 0. The boards are heldin position to the cuttingplanes by an angular guide-frame, l), at rightangles to the planes, being clamped in position thereon by a pivotedclamp-lever or other fastening device, D.

The frame B has a rack at one end that is engaged by a toothed segmentat the end of a fulcrumed hand-lever, B, by which the' frame B is movedforward and back in the main frame A.

The middle portion of frame B branches into two parallel parts that forma lateral open space, with vertically-grooved posts a, along which theside posts I) of the planes are guided. The upper and lower planes areacted upon by strong band-springs d, that press them together, so thatthe planes cut equally at both Vertical knives e at one side of theplanes serve to cut the shoulders of the tenons. Slotted spring-pieces fare attached by clampscrews to frame B, and made to project into notchesb of side posts I), so that by adjusting them higher or lower therequired thickness of the tenon is secured in accurate manner.

The planes 0 are verticallynnovable in horizontal openings of the doublemiddle portion of frame B, and are raised or lowered by means of leversE, connected by links or bails'g to the planes.

By raising the upper and lowering the bottom plane of the levers theboard to be tenoned may be readily inserted or removed, the planesacting when pressedon the board by the springs on the edges of thesame,and the machine is then ready to cut the tenon by reciprocating theplanes by the hand-lever until they are stopped by the sidespring-pieces, when the required thickness is obtained.

The machine may also be arranged vertically with a guide-framesidewiseof the main frame and a treadle to work the vertically-reciprocatedplanes.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In a tenoning-machine, the combination of thereciprocating frame B, having guide-posts a, the adjustable planes C 0,provided with sliding arms b, the springs d d, bails g, and cam-leversE, with the frame A and feed-table D, substantially as and for thepurpose herein set forth.

STEPHEN M. REDFIELD.

Witnesses:

H. H. GEIGER, M. H. Cox.

